OS itself is nice, just like FreeBSD, which is the base, but can't agree with this:

PC-BSD is one of the best operating systems out there, for beginners to UNIX to sysadmins alike.

... because PC-BSD gets in a sysadmin way much too often ... It forces you to use KDE [or fluxbox, IIRC], but it also uses many unccesecary daemons running in a background, like HAL for example. KDE is definitely not in taste of someone, who likes order, clean and leightweight env [which is - of course - most of sysadmins ]. Definitely not for me. Definitely not for one of my clients - been there, tried that, but it failed to bring the right experience, so now my client is happy with FBSD+XFCE4+Flash, small footprint, good performance and responsivenes.